// Section.cpp -- Section Class Header for decompressing individual
//     sections of Lemmings binary files (*.DAT). Used by Decompress class
// Copyright (C) 2008  Morgan Conbere
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
// USA.
//
// $Id: Section.h 17 2008-09-08 05:11:57Z mconbere $
//

#ifndef __DECOMPRESS_SECTION_H__
#define __DECOMPRESS_SECTION_H__

#include <stdint.h>

#include "Header.h"

namespace decompress
{

class Section
{
public:
    Section(uint8_t bitsLeft, uint8_t checkSum, uint16_t decompressedSize, uint16_t compressedSize);
    bool decompress(uint8_t* compressedBuffer);
    std::ostream& get(std::ostream &out);
    void print(std::ostream &out);
    Header& header() { return mHeader; }
    
private:
    unsigned int popBit();
    unsigned int popBits(unsigned int n);
    void dumpBytes(unsigned int n);
    void copyBytes(unsigned int n, unsigned int o);
    
    Header mHeader;
    uint8_t* mCompressedBuffer;
    uint8_t* mDecompressedBuffer;
    uint8_t mCheckSum;
    size_t mDIndex;
    size_t mCIndex;
    uint8_t mCurrent;
    uint8_t mBitsLeft;
};

} // namespace decompress

#endif // __DECOMPRESS_SECTION_H__
